Where Can I Find My Tax ID Number?
If you’re preparing tax documents or applying for a loan, you might ask yourself, “Where can I find my tax ID number?” Whether you’re an individual or a business owner, your tax ID is essential for IRS filings, bank accounts, and legal identification.
This guide covers the different types of tax ID numbers and exactly where to find yours.
What Is a Tax ID Number?
A Tax Identification Number (TIN) is a unique number the IRS uses to identify individuals and businesses for tax purposes. There are different types of TINs depending on your situation:
- Social Security Number (SSN) – for U.S. citizens and permanent residents
- Employer Identification Number (EIN) – for businesses and certain estates/trusts
- Individual Taxpayer Identification Number (ITIN) – for non-residents and others not eligible for an SSN
Where Can I Find My Tax ID Number?
For Individuals (SSN or ITIN):
If you’re an individual, your Tax ID Number is your SSN or ITIN. You can find it:
- On your Social Security card
- On your tax return forms (1040, W-2)
- In IRS notices or correspondence
- On your ITIN approval letter (if you applied for one)
Tip: If you misplaced your Social Security card, you can request a replacement through the SSA website.
For Businesses (EIN):
If you’re a business owner, your EIN is your business’s Tax ID Number. Find it:
- On the IRS EIN confirmation letter (CP 575 or 147C)
- On past business tax returns (Form 1120, 1065, etc.)
- On your business bank account paperwork
- In official government filings or correspondence
Can’t find your EIN? You can request a copy from the IRS by calling the Business & Specialty Tax Line at 800-829-4933.
How to Retrieve a Lost EIN or ITIN
- EIN: Request a 147C EIN Verification Letter from the IRS.
- ITIN: Call the IRS at 800-829-1040 for guidance (only if you’re the taxpayer).
- SSN: Visit your local Social Security office with proper ID.
Final Thoughts
So, where can you find your tax ID number?
It depends on whether you’re an individual or a business. Look for it on official documents like tax returns, IRS letters, and financial paperwork. If all else fails, the IRS or SSA can help you recover it securely.
